NIKOLA LJUBIČIĆ
Address: Žanke Stokić 46, 11000 Belgrade
Phone: +381 (0)63 839-3893,
E-mail: kolja@nhg.rs
Certificate dated October 16, 2016 for the following areas:
BORIS VLAJNIĆ
Address: Milana Radmana 48, 78000 Banja Luka, BH – Republic of Srpska
Phone: 00 387 66 542 496,
E-mail: bvlajnic@blic.net
Certifier from January 1, 2024, it certifies the following area:
ZORAN STEPANOVIĆ
Address: Kursulina 7, 11000 Belgrade
Phone: +381 (0)63 346 930,
E-mail: nstep@sbb.rs
Certifier from March 25, 2025, it certifies the following area: